How do you pass the value of a input parameter from one hana view to another?

Hi,

I have a use case where the logic involves a lookup of a particular value from the record of a hana table using input parameter in C1 and passing this value to the input parameter of a nested calculation view C2 for computation of a date to be applied as the filter in the logic of C2. This is a similar use case to the scn thread: Passing mandatory parameter within several calc... | SCN but then I want to know the syntax to be used for the evaluation of the input parameter in C2 in hana calculation view and not in a scripted calculation view. Kindly find the attached error screenshot for the same.